I've a friend who likes to pray five times a day, and he likes to advise others to pray. He'll listen to whatever I talk about Islam. Whenever I approach him he'll listen to me and I tell him, why can't you pray? He told me he will, and I have heard this for the past ten to twenty years. One day I call him to pray and he gives excuses. I think that during prayer time his mind goes somewhere else; after that he thinks "why can't I pray?". I am very tired of telling him. I need advice.